A RADIOACTIVE NUCLEUS HAS A HALF-LIFE OF 20 YEARS, STARTING WITH 100,000 PARTICLES, HOW MANY PARTICLES WILL BE LEFT EXACTLY AT THE END OF 40 YEARS
A. 75,000 particles B. 35,000 particles C. 25,000 particles ✓ D. 50,000 particles The answer to the question is: C. 25,000 particles The decay of a radioactive nucleus can be described by its half-life, which is the time it takes for half…
GIVEN THAT 32.0g SULPHUR CONTAINS 6.02 X 10^23 SULPHUR ATOMS, HOW MANY ATOMS ARE THERE IN 2.70g OF ALUMINIUM
A. 6.02 x 10 23 B. 3.01 x 1022 C. 6.02 x 1022 ✓ D. 5. 08 x 1022 E. 3.01 x 1022 The answer to the question is: C. 6.02 x 1022 To calculate the number of atoms in a sample, you can use Avogadro’s…
HOW MANY MOLE OF AGNO3 ARE THERE IN 500CM^3 OF 0.01M AGNO3 SOLUTION
To calculate the number of moles of AgNO3 in a solution, we can use the formula: moles = concentration (M) x volume (L) Given: Concentration of AgNO3 solution = 0.01 M Volume of AgNO3 solution = 500 cm^3 First, we…
HOW MANY C-SECTIONS CAN YOU HAVE
A cesarean section, commonly known as a C-section, is a surgical procedure used to deliver a baby through incisions in the mother’s abdomen and uterus. The number of C-sections a woman can have depends on various factors, including her health,…
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